Hyperolius frontalis

Adult males measure 25–29 mm (1.0–1.1 in) in snout–vent length. The dorsum is bright translucent green with some mottling. The snout bears a conspicuous light golden triangle. A light, brief, broad dorsolateral stripe is sometimes present, occasionally extending further back than the shoulder region. Calling males have green vocal sac.^[3][4]

The male advertisement call is a brief, hard buzzing that is repeated two–three times.^[3][4]

Hyperolius frontalis occurs in lowland and montane forest at elevations of 700–2,000 m (2,300–6,600 ft) above sea level. It has been recorded in dense secondary vegetation overhanging a small stream and in a small marsh in forest. Breeding habitat is unknown, but presumably the larvae are aquatic. It appears to be common within its range. It is threatened by habitat loss caused by agriculture activities, wood extraction, and expanding human settlements. It occurs in the Bwindi National Park in Uganda and in the Virunga National Park and—possibly—Kahuzi-Biega National Park in the Democratic Republic of Congo.